DE102017120042A1 - Detergent, use of detergent and washing process - Google Patents

Abstract

The present invention relates to a detergent containing at least one keratin and / or keratin derivative in combination with cellulase and uses of the detergent. The detergent of the invention improves the softness, drapability, tear resistance, grayness inhibition and / or gray removal of fabrics after washing.

Description

The present invention relates to a detergent for textiles which, with a concomitant excellent cleaning performance, improves softness, drapability, tear resistance, grayness inhibition and / or gray removal of textiles treated with this detergent. Moreover, the present invention also relates to a washing process for obtaining the above-mentioned. Effects.

By washing textiles with detergent, the fibers may harden and the textiles lose their formerly soft feel. Likewise, the elasticity and drapability of textiles often diminishes after washing, and it has also been observed that after frequent washes, textiles are more likely to tear on existing cuts such as pocket corners, slits or buttonholes. Furthermore, repeated washing operations can lead to a graying of the textiles.

From the publication EP 2 915 875 A1 nourishing detergents are known which increase the elasticity of fibers and the softness of a fabric. These detergents contain from 0.1 to 30% by weight of an anionic surfactant, at least one nonionic surfactant and from 0.01 to 10% by weight of a quaternary ammonium compound.

The publication WO 2015/091108 A1 describes the use of 0.01 to 10% by weight of alkylcarboxylic esters in order to increase the softness of washed textiles and to reduce their graying.

The use of 0.001 to 30 wt .-% of isoparaffins in detergents to reduce the tendency to crease is in the document WO 2017/063960 A1 described. The presence of the isoparaffins in the detergent also results in increased softness of the fabrics washed with this composition.

Starting from this prior art, it is an object of the present invention to provide a detergent which is distinguished by an improved softness, drapability, tear resistance, grayness inhibition and / or gray removal of the treated textiles with outstanding cleaning performance. Moreover, it is an object of the present invention to provide a washing process by which the effects described above can be achieved.

Surprisingly, it has been found that this object is achieved by a detergent which contains at least one keratin and / or keratin derivative and also cellulase. In other words, the detergent according to the invention contains an active ingredient combination of at least one keratin and cellulase or a combination of active ingredients of at least one keratin derivative and cellulase or an active ingredient combination of at least one keratin, at least one keratin derivative and cellulase.

For the purposes of the present invention, "detergent" means any washing, cleaning and care agent which is used for cleaning and care of textiles, such as home and clothing textiles, which in particular have a cotton content or consist of cotton. These include, in particular, heavy-duty detergents, special detergents, e.g. Mild detergents, wool detergents and the like, washing auxiliaries, laundry care preparations, laundry pre-treatment compositions and laundry aftertreatment preparations.

The keratins used in the context of the present invention are water-insoluble fiber proteins which are subdivided according to their molecular conformation into α- and β-keratins. α-keratins are rich in L-cysteine and therefore contain numerous disulfide bonds cross-linking the peptide chains.

Keratin derivatives are understood as meaning all possible derivatives of keratins, for example hydrophilized keratins, which are distinguished by improved water solubility and are therefore very well suited, in particular, for liquid detergents or gel-like detergents. Also include this by amine groups functionalized keratins and in particular partially hydrolyzed or fully hydrolyzed keratins.

The cellulase used according to the present invention is an enzyme capable of degrading cellulose. In particular, cellulose-based textiles such as e.g. cotton or cotton-containing textiles, be smoothed, since the cellulase in particular of woven textile material protruding cellulose fibers removed by enzymatic degradation. However, contacting cellulase-based fabric with cellulase for a prolonged period of time, for example during a washing operation, may result in damage to the fabric because the cellulase is also capable of attacking existing cellulosic fabric.

However, it has surprisingly been found that cellulase used in combination with at least one keratin and / or at least one keratin derivative, in particular, smoothes, as desired, cellulose-based textiles thereby imparting to the textile a soft feel and a smooth appearance especially colored textiles with a higher color brilliance appear, but the textile fibers are not permanently damaged, but rather strengthened and stabilized. Without being bound to the theory, it is assumed that the keratin or keratin derivatives used according to the invention are applied to the textile and bring about reinforcement of the fibers or of the fabric by the formation of crosslinks.

A use of the detergent according to the invention thus not only causes the textile treated with the detergent to become clean and fresh, but also ensures that the textile retains its original shape, ie the textile retains its inherent elasticity, is stable and tear-resistant and yet has a high degree of softness. In addition, can be prevented by the inventive detergent a graying and the white washing power can be increased, so that in particular white textiles appear whiter and shines the color of colored textiles. An increase in the whitening power of the detergent thus manifests itself in a graying inhibition and / or gray removal of the textiles washed with the detergent according to the invention. The active ingredient combination according to the invention comprising at least one keratin and / or at least one keratin derivative together with cellulase also has no negative effect on the washing behavior or the textiles. In particular, the water absorbency of the textiles is not reduced, so that a very good washing result is achieved.

The dependent claims have preferred developments and refinements of the invention to the content.

An advantageous development of the detergent according to the invention is characterized in that a mass fraction of keratin and / or keratin derivative, based on the total mass of the detergent, from 0.001 to 5% and especially 0.01 to 1%. When a combination of at least one keratin and / or at least one keratin derivative is used, the mass fraction refers to the total mass of all keratins and keratin derivatives contained in the detergent. Already a small mass fraction of 0.001% and in particular of 0.01% already causes a stabilization of the textile fibers while compensating for the rather fiber-degrading effect of the cellulase. The lower the mass fraction of keratin and / or keratin derivative (s), the cheaper the detergent can be produced. Below 0.001 mass fraction of keratin and / or keratin derivative, however, no significant effect with regard to stabilization of the textiles can be observed. By contrast, high mass fractions of more than 1% or, in particular, more than 5% are difficult to incorporate into the detergent, especially if they are liquid detergents or gel detergents. With regard to a balanced spectrum of activity, preference is given to a mass fraction of the at least one keratin and / or keratin derivative in a range from 0.01% to 1%.

Preferably, the detergent according to the invention contains α-keratins, since these have a high elasticity due to their helical structure, and thus can give a textile a good elasticity. A "out of form walking" of the textiles can thereby be very well prevented. For ethical reasons and also because of the good availability, the keratin and / or keratin derivative used according to the invention is more preferably obtained from wool. Particular preference is given to using a keratin derivative, preferably a partial hydrolyzate, which, compared to a pure keratin, is distinguished by increased water solubility and is therefore particularly suitable for washing textiles. Most preferably, the detergent contains a partial hydrolyzate obtained from an enzymatically degraded new wool keratin as is included, for example, in Nutrilan Keratin W ^® PP (from BASF, Ludwigshafen, Germany).

Further advantageously, a mass fraction of cellulase, based on the total mass of the detergent, from 0.001% to 1% and in particular from 0.005% to 0.3%. Even with a low mass fraction of cellulase of 0.001% and in particular of 0.005%, an effect of smoothing a textile washed with the detergent according to the invention is noticeable, which is the greater, the higher the mass fraction of cellulase in the detergent. However, very high mass fractions greater than 0.3%, and more particularly greater than 1%, may result in damage to textiles washed with the detergent such that a particularly preferred mass fraction of cellulase is from 0.005% to 0.3%.

In this case, it is particularly preferred if a mass ratio of the at least one keratin and / or the at least one keratin derivative to cellulase is 5: 1 to 1: 1 and in particular 2: 1. The proportion of keratin or the keratin derivative in mass% is thus always at least as great as the proportion of cellulase in the detergent according to the invention, so that a potential associated with the cellulase Effect of degradation of cellulose fibers is always canceled or superimposed by the tissue stabilizing effect of keratin. As a result, a very good tissue stabilization of the textile is obtained, whereby the drapability and stability of the textile are improved with very good softness. Also improved by the specified mass ratio, the grayness inhibition and gray removal of the textile. In other words, the white washing power of the detergent is significantly increased.

To improve the detergency, the detergent according to the invention advantageously contains at least one surfactant. A surfactant in the context of the present invention is a surface-active substance which is able to dissolve dirt particles during a washing process with the detergent from the textile or textiles by means of micelle formation. Suitable surfactants include cationic, anionic, nonionic and amphoteric surfactants. Any mixtures of two or more surfactants can be used depending on the desired washing performance.

Suitable anionic surfactants include, but are not limited to, alkylbenzenesulfonates, olefin sulfonates, alkanesulfonates, fatty alcohol sulfates, fatty alcohol ether sulfates or a mixture of two or more of these anionic surfactants. Of these anionic surfactants, alkylbenzenesulfonates, fatty alcohol ether sulfates and mixtures thereof are particularly preferred.

Preferred surfactants of the sulfonate type are alkylbenzenesulfonates, olefinsulfonates, ie mixtures of alkene and hydroxyalkanesulfonates and disulfonates, as are obtained, for example, from C _12-18 -monoolefins having terminal or internal double bonds by sulfonation with gaseous sulfur trioxide and subsequent alkaline or acidic Hydrolysis of the sulfonation obtained. Also suitable are C _12-18 -alkanesulfonates and the esters of α-sulfo fatty acids (ester sulfonates), for example the α-sulfonated methyl esters of hydrogenated coconut, palm kernel or tallow fatty acids.

Alkylbenzenesulfonates are preferably selected from linear or branched mono- and dialkylbenzenesulfonates. The alkyl radicals may contain, individually or together, 9 to 19, preferably 9 to 15, and in particular 9 to 13 C-atoms. A most preferred representative is sodium dodecylbenzylsulfonate.

Alk (en) ylsulfates are the salts of the sulfuric monoesters of C ₁₂ -C ₁₈ fatty alcohols, for example coconut fatty alcohol, tallow fatty alcohol, lauryl, mistrystyl, cetyl or stearyl alcohol or the C ₁₀ -C ₂₀ oxo alcohols and those half esters secondary alcohols of these chain lengths are preferred. Of washing technology interest, the C ₁₂ -C ₁₆ alkyl sulfates and C ₁₂ -C ₁₅ -Atkytsulfate and C ₁₄ -C ₁₅ alkyl sulfates are preferred. 2,3-alkyl sulfates are also suitable anionic surfactants.

Also alkyl ether sulfates having the formula R ^{1 is} -O- (AO) _n -SO ₃ ^- X ⁺ are suitable. In this formula, R ^{1 is} a linear or branched, substituted or unsubstituted alkyl radical, preferably a linear, unsubstituted alkyl radical, more preferably a fatty alcohol radical. Preferred radicals R ¹ are selected from decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl and eicosyl radicals and mixtures thereof, where the even number at C atoms are preferred. Particularly preferred radicals R ¹ are derived from C ₁₂ -C ₁₈ fatty alcohols, for example from coconut fatty alcohol, tallow fatty alcohol, lauryl, mirystyl, cetyl or stearyl alcohol or from C ₁₀ -C ₂₀ oxo alcohols.

AO represents an ethylene oxide (EO) or propylene oxide (PO) moiety, preferably an ethylene oxide moiety. The subscript n stands for an integer from 1 to 50, preferably from 1 to 20, and especially from 2 to 10. Most preferably, n stands for the numbers 2, 3, 4, 5, 6, 7 or 8. X stands for a monovalent cation or the nth part of an n-valent cation, preference is given to the alkali metal ions and below Na ⁺ or K ⁺ , with Na ^{+ being} extremely preferred. Other cations X ⁺ may be selected from NH ₄ ⁺ , ½Zn ²⁺ , ½Mg ²⁺ , ½Ca ² , ½Mn ²⁺ and mixtures thereof.

The anionic surfactants may be in the form of their sodium, potassium or magnesium or ammonium salts. Preferably, the anionic surfactants are in the form of their sodium salts and / or ammonium salts. Amines which can be used for the neutralization are preferably choline, triethylamine, monoethanolamine, diethanolamine, triethanolamine, methylethylamine or a mixture thereof, with monoethanolamine being preferred.

Suitable nonionic surfactants include alkoxylated fatty alcohols, alkoxylated oxo alcohols, alkoxylated fatty acid alkyl esters, fatty acid amides, alkoxylated fatty acid amides, polyhydroxy fatty acid amides, alkylphenol polyglycol ethers, amine oxides, alkyl (poly) glucosides, and mixtures thereof.

R²

für einen linearen oder verzweigten, substituierten oder unsubstituierten Alkylrest,

AO

für eine Ethylenoxid-(EO) oder Propylenoxid-(PO)-Gruppierung,

m

für ganze Zahlen von 1 bis 50 stehen.

Preferred laundry care compositions contain at least one fatty alcohol alkoxylate of the formula R ^{2 is} -O- (AO) _m -H in the

R ²

a linear or branched, substituted or unsubstituted alkyl radical,

AO

for an ethylene oxide (EO) or propylene oxide (PO) grouping,

m

stand for integers from 1 to 50.

In the abovementioned formula, R ^{2 is} a linear or branched, substituted or unsubstituted alkyl radical, preferably a linear, unsubstituted alkyl radical, particularly preferably a fatty alcohol radical. Preferred radicals R ² are selected from decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl and eicosyl radicals and mixtures thereof, where the representatives with an even number of C Atoms are preferred. Particularly preferred radicals R ² are derived from C ₁₂ -C ₁₈ fatty alcohols, for example from coconut fatty alcohol, tallow fatty alcohol, lauryl, mirystyl, cetyl or stearyl alcohol or from C ₁₀ -C ₂₀ -oxo alcohols.

AO represents an ethylene oxide (EO) or propylene oxide (PO) moiety, preferably an ethylene oxide moiety. The subscript m is an integer from 1 to 50, preferably from 1 to 20, and especially from 2 to 10. Most preferably, m is the numbers 2, 3, 4, 5, 6, 7 or 8.

According to a further advantageous development, in order to obtain a particularly good washing performance with high soil dissolving power, it is provided that a mass fraction of surfactant, based on the total mass of the detergent, is 1% to 50% and in particular 3% to 20%. When using a combination of two or more surfactants, the mass fraction refers to the total mass of the surfactants used.

Further preferably, the detergent is in powder form, liquid, gel, in the form of tabs or capsules.

The detergent may contain other common ingredients. All amounts stated in connection with the ingredients of the detergent described herein are, unless otherwise indicated, in% by weight, in each case based on the total mass of the detergent.

Furthermore, such amounts referring to at least one ingredient will always refer to the total amount of that type of ingredient contained in the detergent, unless explicitly stated otherwise. That is, such amounts refer, for example in connection with "at least one surface-active substance", to the total amount of surface-active substances contained in the detergent.

"At least one" as used herein refers to 1 or more, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9 or more. In the context of ingredients of the detergent described herein, this indication does not refer to the absolute amount of molecules but to the nature of the ingredient. Thus, for example, "at least one enzyme" or "at least one surfactant" means one or more different enzymes or surfactants, i. one or more different types of enzymes or surfactants. Together with quantities, the quantities refer to the total amount of the corresponding designated type of ingredient as defined above.

In addition, the detergent according to the invention may also contain other ingredients which further improve the performance and / or aesthetic properties of the detergent. In the context of the present invention, the detergent preferably additionally contains one or more substances from the group of bleaches, complexing agents, builders, electrolytes, nonaqueous solvents, pH adjusters, perfumes, perfume carriers, fluorescers, dyes, hydrotropes, foam inhibitors, silicone oils, antiredeposition agents , Grayness inhibitors, inlet preventer, anti-crease agents, Color transfer inhibitors, antimicrobial agents, germicides, fungicides, antioxidants, preservatives, corrosion inhibitors, antistatic agents, bittering agents, ironing aids, repellents and impregnating agents, swelling and anti-slip agents, plasticizing components and UV absorbers.

As a bleaching agent can serve all substances that destroy or absorb dyes by oxidation, reduction or adsorption and thereby discolor materials. These include u.a. hypohalite-containing bleaches, hydrogen peroxide, perborate, percarbonate, peroxoacetic acid, diperoxoazelaic acid, diperoxododecanedioic acid and oxidative enzyme systems.

As builders that may be included in the laundry care, silicates, aluminum silicates (especially zeolites), carbonates, salts of organic di- and polycarboxylic acids and mixtures of these substances are mentioned in particular.

Organic builders which may be present in the laundry care composition are, for example, the polycarboxylic acids which can be used in the form of their sodium salts, polycarboxylic acids meaning those carboxylic acids which carry more than one acid function. For example, these are citric acid, adipic acid, succinic acid, glutaric acid, malic acid, tartaric acid, maleic acid, fumaric acid, sugar acids, aminocarboxylic acids and mixtures of these. Preferred salts are the salts of polycarboxylic acid, citric acid, adipic acid, succinic acid, glutaric acid, tartaric acid, sugar acids and mixtures thereof.

As builders further polymeric polycarboxylates are suitable. These are, for example, the alkali metal salts of polyacrylic acid or polymethacrylic acid, e.g. those having a molecular weight of 600 to 750,000 g / mol.

Suitable polymers are in particular polyacrylates, which preferably have a molecular weight of from 1,000 to 15,000 g / mol. Because of their superior solubility, the short-chain polyacrylates, which have molecular weights of from 1,000 to 10,000 g / mol and more preferably from 1,000 to 5,000 g / mol, may again be preferred from this group.

Also suitable are copolymeric polycarboxylates, in particular those of acrylic acid with methacrylic acid and of acrylic acid or methacrylic acid with maleic acid. To improve the water solubility, the polymers may also contain allylsulfonic acids, such as allyloxybenzenesulfonic acid and methallylsulfonic acid, as a monomer.

In liquid detergents, preference is given to using soluble builders, such as, for example, citric acid, or acrylic polymers having a molar mass of from 1,000 to 5,000 g / mol.

Liquid detergents further preferably contain water as the main solvent. It is preferred that the detergent contains by weight more than 5%, preferably more than 15% and especially preferably more than 25%, in each case based on the total mass of the detergent, of water. Particularly preferred liquid detergents contain mass fractions of from 5 to 90%, preferably from 10 to 85%, particularly preferably from 25 to 75% and especially preferably from 35 to 65% of water. Alternatively, the detergent according to the invention may be a low-water to anhydrous detergent, the mass fraction of water in a preferred embodiment being less than 10% and more preferably less than 8%, based in each case on the total mass of the detergent.

In addition, non-aqueous solvents may be added to the detergent. Suitable non-aqueous solvents include mono- or polyhydric alcohols, alkanolamines or glycol ethers, provided that they are miscible with water in the specified concentration range. Preferably, the solvents are selected from ethanol, n-propanol, i-propanol, butanols, glycol, propanediol, butanediol, methylpropanediol, glycerol, diglycol, propyldiglycol, butyldiglycol, hexylene glycol, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether, ethylene glycol mono-n-butyl ether, diethylene glycol methyl ether, Diethylene glycol ethyl ether, propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol propyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, methoxytriglycol, ethoxytriglycol, butoxytriglycol, 1-butoxyethoxy-2-propanol, 3-methyl-3-methoxybutanol, propylene glycol t-butyl ether, di-n-octyl ether and mixtures thereof Solvent. However, it is preferred that the detergent contains an alcohol, in particular ethanol and / or glycerol, in mass fractions of between 0.5 and 5%, based on the total mass of the detergent.

To the optionally present in particular in liquid detergents usual enzyme stabilizers include amino alcohols, for example mono-, di-, triethanol- and propanolamine and mixtures thereof, lower carboxylic acids, boric acid, alkali metal borates, boric acid-carboxylic acid combinations, boric acid esters, boric acid derivatives, calcium salts, for example Ca -Ameisensäure combination, magnesium salts, and / or sulfur-containing reducing agents.

Other surfactants include soaps, with soaps of C ₁₂ -C ₁₈ fatty acids being preferred. They may also be in the form of their sodium, potassium, magnesium or ammonium salts.

In addition to cellulase, the detergent according to the invention may additionally contain one or more enzymes.

In principle, all the enzymes established in the prior art for this purpose can be used in this regard. Preferably, it is one or more enzymes capable of exhibiting catalytic activity in a detergent, in particular a protease, amilase, lipase, mannanase, pectin-splitting enzyme, tannase, xylanase, xanthanase, β-glucosidase, carrageenase, perhydrolase, oxidase , Oxidoreductase and mixtures thereof. Preferred hydrolytic enzymes include in particular proteases, amylases, in particular α-amylases, lipases, in particular pectinase, mannanase, β-glucanases, and mixtures thereof. These enzymes are basically of natural origin. Based on the natural molecules, improved derivatives are available for use in detergents, which are preferably used accordingly.

According to a further aspect of the present invention, the use of a laundry detergent as disclosed above for improving the softness, drapability, tear resistance, grayness inhibition and / or gray removal of textiles is also described. These effects are achieved by the active ingredient combination present in the detergent according to the invention of at least one keratin and / or at least one keratin derivative and cellulase.

The softness of a textile piece can be determined by means of the so-called "fabric-through-draw method". This method captures all relevant information on textile products in terms of their grip (including tensile, shear, bending and frictional forces). In the fabric pulling method, which is performed by means of a PhabrOmeter ^® (Nu Cybertek, Inc., CA, USA), a sample of fabric is pulled through a precisely defined spout and detects the resistance of the substance when pulling in a force-distance curve. The draft is all the easier, and thus the force (energy) less, the softer the fabric is. To determine the softness, the area under the obtained force-displacement curve is calculated. The lower this value, the greater the softness of the textile.

Knitwear made of 100% viscose was washed ten times with a detergent according to the invention which contained a mass fraction of 0.025% keratin hydrolyzate (Nutrilan Keratin W PP, BASF) and a mass fraction of 0.01% cellulase, in each case based on the total mass of the detergent. The value for the area under the force-displacement curve in the fabric swatch test in the case of the invention was 10.1, whereas a value of 11.7 for those swatches, with a reference detergent of the same composition, but without the addition of keratin or a Keratin derivative was washed. The difference demonstrates an improved softness of the fabric samples treated with the detergent according to the invention.

The drapability of a textile describes its ability to adapt to spatial structures. Also the drapability can be determined using the carried out by the above described PhabrOmeter ^® fabric pulling method, this method simulates the moldability (drape) of a textile fabric under the influence of its own weight and gravity. The parameter is determined from the data of the force-displacement curve. The lower this value, the more drapable / softer, more fluent is the case of the respective textile.

To determine the Drapierfähigkeit knitted fabric was washed 100% viscose, as described above, ten times with a detergent according to the invention or in comparison with the reference detergent. For textiles washed with a detergent containing 0.025% by mass of keratin hydrolyzate (Nutrilan Keratin W PP, BASF) and 0.01% by mass of cellulase, a value of 9.78 was measured, while the Reference sample scored a value of 11.37. from that It can be seen that the presence of at least one keratin and / or at least one keratin derivative in combination with cellulase in the detergent enhances drapability.

The tensile strength of textiles which have been washed with a detergent according to the invention is determined by determining the tear propagation force. The determination of the tearing strength of textiles with the ballistic pendulum (Elmendorf) is carried out according to DIN EN ISO 13937-1: 2000 and is used to evaluate the tearing force of textiles. The test simulates the practical case in which the textile fabric is exposed to a sudden load and thereby - starting from an existing interface (eg pocket corners of a pair of pants or a skirt, a slit, a buttonhole) - carries on. With the ballistic pendulum, the tearing work is measured directly and is generally indicated preferably as the tearing force. The greater the value determined, the higher the tensile strength of the textiles. The following textiles were tested: WFK 20A (65% PES / 35% cotton, 100% cotton (Noblesse Royal), 100% PES.

To determine the tear resistance knitting fabric 100% viscose, as described above, five times in a Miele Novotronic W 1514 pre-damaged with a powder formulation and then in Easy Care + program at 40 ° C, 16 ° DH and 800 rpm with a detergent according to the invention and with a Reference detergent with a dosage of 60 ml and a load of 2.5 kg washed ten times in the presence of a SBL2004 cloth. For textiles washed with a detergent containing 0.025% by mass of keratin hydrolyzate (Nutrilan Keratin W PP, BASF) and 0.01% by mass of cellulase, significantly higher levels of tear resistance were achieved than for textiles washed with the reference detergent. It can be seen that the presence of at least one keratin and / or at least one keratin derivative in combination with cellulase in the detergent improves the tear resistance.

The cleaning performance is assessed on the basis of standardized soiling. For this purpose, a representative patch set is added to all washes. In the present case, the cloth SBL 2004 (WFK Testgewebe GmbH, Brüggen, Germany) is used as a standard cloth containing various substances in defined concentrations as soiling.

Furthermore, a washing process is described according to the invention which comprises the following process steps: a) providing a detergent as described above and b) bringing a textile into contact with the detergent. To facilitate contacting the fabric with the detergent, the detergent may be formulated as a solution, especially as an aqueous solution. By applying the method according to the invention, the textile is not only cleaned, that is freed from dirt, but also its softness and Drapierfähigkeit be improved. In addition, the textiles appear whiter. A graying of textiles is minimized or prevented, so inhibited.

Examples

Example 1: Detergent

The following detergents were prepared by mixing. Detergents B and D are embodiments of the invention while Detergents A and C were used as reference and did not contain a combination of at least one keratin and / or at least one keratin derivative and cellulase. Table 1: Composition liquid detergent A (reference) [mass fractions in%] B (according to the invention) [mass fractions in%] boric acid 0.50 0.50 citric acid 0.23 0.23 glycerin 0.50 0.50 Anionic surfactants 5.5 5.5 Nonionic surfactants 3.1 3.1 NaOH 0.70 0.70 Soap 0.50 0.50 preservative 0,050 0,050 Phosphonate DTPMP 0.20 0.20 brighteners 0.1 0.1 cellulase 0.01 0.01 Enzyme mix (without cellulase) 0.99 0.99 Perfume 0.5 0.5 dye 0,003 0,003 Keratin (Nutrilan Keratin W PP, BASF) 0 0,025 water on 100 on 100 Table 2: Composition of powder detergents C (reference) [mass fractions in%] D (according to the invention) [mass fractions in%] C _12-18 fatty alcohol with 7 EO 2 2 C _12-18 fatty alcohol sulfate with 7 EO, sodium salt 1.5 1.5 Linear alkyl benzene sulfonate, sodium salt 10 10 sodium 20 20 sodium 6.5 6.5 sodium disilicate 4 4 sodium 17 17 TAED 4 4 Polyacrylate, sodium salt 3 3 carboxymethylcellulose 1 1 sodium phosphonate 1 1 sodium sulphate 29 28.975 cellulase 0.01 0.01 Enzyme mix (without cellulase) 0.99 0.99 Keratin (Nutrilan Keratin W PP, BASF) 0 0,025

Example 2: Improvement of softness

Knitwear of 100% viscose was tested for softness after washing with a detergent (Detergent Composition B) containing 0.025% by mass of keratin hydrolyzate (Nutrilan Keratin W PP, BASF) and 0.01% by weight of cellulase. tested and compared with the softness of such viscose knitwear washed with a reference detergent without a combination of at least one keratin and / or at least one keratin derivative and cellulase (Detergent Composition A). The textiles tested were washed in a Miele Novotronic W1514 Easy Care + program at 40 ° C at 16 ° DH, 800 rpm with a dosage of 60 ml and a load of 2.5 kg ten times in the presence of a SBL 2004 towel and then on dried the leash.

The measurements were performed by means of a PhabrOmeter ^® (Nu Cybertek) according to the "stuff pulling method". All relevant grip information was collected in a force-displacement curve. For the textiles washed with the addition of a keratin, a value of 10.1 was obtained, while the reference value was 11.7. It turns out that by adding a combination of the Keratin hydrolyzate and cellulase lower readings were achieved. A lower measured energy (corresponding to a lower measured value) means less effort to pull through the fabric and thus greater softness of the fabric. The test results obtained show that the addition of a combination of the keratin hydrolyzate and cellulase improves the softness of the fabric after washing.

Example 3: Improvement of Drapability

The textiles washed in Example 2 were additionally tested for drapability after the washes. The values for this were also determined from the measured force-displacement curve. The fabric samples washed with the 0.025% keratin hydrolyzate additive and 0.01% cellulase additive (each by mass) had a value of 9.78, while the fabric samples washed without the addition of a combination of keratin hydrolyzate and cellulase had a value of 11:37. The lower the value, the better it is to drape textiles. The experiment has shown that the addition of a combination of keratin hydrolyzate and cellulase in a detergent enhances drapability.

Example 4: Improvement of tear strength

To determine the tear strength of textiles after repeated washes, the textiles tested were pretreated five times in a Miele Novotronic W1514 with a powder formulation and then in the Easy Care + program at 40 ° C, 16 ° DH, 800 rpm with a dosage of 60 ml (corresponding to detergent - Compositions A and B) and a load of 2.5 kg ten times in the presence of a SBL 2004 cloth washed and each on a leash. The tested textiles are standard WFK fabrics (10A 100% cotton, 20A 65% polyester / 35% cotton, 30A 100% polyester) and commercially available textiles (100% cotton, 50% cotton / 50% polyester, 100% polyester )

The tear propagation strength of the textiles washed with and without a combination of 0.025% keratin hydrolyzate additive and 0.01% cellulase was determined by the Elmendorf method ( DIN EN ISO 13937-1: 2000 ) with the ballistic pendulum (FX 3750 Elmendorf tester, Textest AG, Schwerzenbach / Switzerland) determined.

For this purpose, a measurement sample was submitted in clamping jaws, 20 mm (± 0.5 mm) deeply cut, so that a tear path of 43 mm (± 0.5 mm) remained. The pendulum was then released and stopped after a full swing. The tear propagation force in Newton was displayed on a digital display of the measuring device and statistically evaluated. From this, the arithmetic mean of the tearing force was calculated.

The results for the tear propagation test in the warp direction are shown in Table 3. Table 3: Results of the tear test WFK20A (65% polyester / 35% cotton) [cN] Nobless Royale (100% cotton) [cN] Fabric (100% PES) [cN] Unwashed 2216 1216 1114 pre Damages 1962 884 1084 Reference detergent (detergent composition A) 1866 860 1188 Detergent (detergent composition B) 1982 882 1192

It was found that the addition of a combination of keratin hydrolyzate and cellulase achieved higher readings than for textiles washed with the reference detergent without a combination of keratin hydrolyzate and cellulase. These higher readings indicate improved fabric tear resistance after washing with a detergent containing a combination of keratin hydrolyzate and cellulase.

Example 5: Improvement of the whitening power - grayness inhibition and / or gray removal

To determine the graying of textiles, textiles were pre-washed twice in a Miele W1714 Easy Care + program at 40 ° C, 14 ° DH, 1200 rpm with a dosage of 40 ml of Detergents A and B from Example 1 and once under the same conditions without detergent washed. The graying tests were carried out in a Miele W 1714 Easy Care + program at 40 ° C, 14 ° DH, 1200 rpm with a dosage of 60 ml of Detergents A and B from Example 1 and a load of 2.5 kg ten times in the presence of a grime - and graying load washed. Five cycles were washed.

To determine the graying, the Y values were measured after the five cycles of graying with a Data Color Spectraflash 600 spectrophotometer. Eight measuring points were recorded.

The results for the graying test are shown in Table 4. Table 4: Results of the graying test Detergent A Detergent B terry towel 83.7 ± 0.6 84.6 ± 0.6 WFK-CO 10A 84.4 ± 0.7 83.5 ± 0.9 WFK Terry Cloth CO 12A 83.1 ± 0.8 84.1 ± 0.4 terry 83.5 ± 0.7 84.4 ± 0.5 cheesecloth 87.0 ± 0.5 86.2 ± 0.6 WFK-CO 11A 85.6 ± 0.6 85.5 ± 1.0 EMPA 221 85.1 ± 0.6 86.2 ± 0.2 WFK PA 40A (100%) 84.4 ± 0.1 84.7 ± 0.2 WFK PES 30A (100%) 85.1 ± 0.2 85.5 ± 0.2 WFK PES / CO 20A (65% PES / 35% CO) 84.9 ± 0.2 85.4 ± 0.6 81% PA / 19% EL 73.9 ± 0.6 75.7 ± 0.7 100% PES 74.1 ± 0.3 75.1 ± 0, 1 EMPA 213 (65% PES / 35% CO) 85.4 ± 0.1 86.0 ± 0.2

It was found that the addition of a combination of keratin hydrolyzate and cellulase gave higher readings for most textiles than for textiles washed with the reference detergent without a combination of keratin hydrolyzate and cellulase. These higher readings stand for improved grayness inhibition of the textiles and thus for an improved whitening power of the detergent and also for an improved white result of the textiles after washing with a detergent containing a combination of keratin hydrolyzate and cellulase.

To determine the minimization of graying, gray fabrics were prepared by using a Miele W 1714 in the easy-care program at 14 ° DH and 40 ° C in the presence of standard dirt by repeated washing. Subsequently, the textiles were washed five times in a Miele W 1714 in the easy care program at 14 ° DH and 40 ° C with a dosage of 60 ml of the detergent A and B from Example 1 and a total loading of 2.5 kg.

For the determination of the grayness minimization, the Y-values after the second and fifth graying cycles were measured with a Data Color Spectraflash 600 spectrophotometer. Eight measuring points were recorded and the difference between the values of the two measuring cycles was determined.

The results for grayness minimization are shown in Table 5. Table 5: Results of graying minimization Detergent A Detergent B dishcloth -6.1 + 0.7 -6.3 ± 0.5 terry towel -6.4 ± 1.4 -6.0 ± 0.7 Barley grain cloth -8.4 ± 0.5 -7.6 ± 0.8 T-Shirt Anvil -6.3 ± 1.6 -7.2 ± 0.6 WFK-CO 10A -4.8 ± 0.6 -5.0 ± 0.7 WFK Terry Cloth CO 12A -6.2 ± 0.6 -6.0 ± 0.8 terry -6.3 ± 0.5 -6.1 ± 0.6 Bleached nettle cloth -4.6 ± 0.7 -4.6 ± 0.5 WFK-CO 11A -7.8 ± 0.6 -7.2 ± 0.5 Double ribbed article -4.6 ± 0.9 -5.4 ± 0.5 EMPA 221 -5.3 ± 0.7 -5.3 ± 0.7 CV (100%) -5.7 ± 0.3 -5.7 ± 0.4 WFK PA 40A (100%) -2.2 ± 0.9 -2.9 ± 0.4 WFK PES 30A (100%) -8.2 ± 0.4 -8.9 ± 0.3 WFK PES / CO 20A (65% PES / 35% CO) -8.7 ± 0.5 -9.0 ± 0.4 Polyacrylonitrile (100%) -0.1 ± 0.8 -0.5 ± 0.5 81% PA / 19% EL -5.0 ± 0.7 -5.6 ± 0.5 50% PES / 50% CO -7.5 ± 0.3 -8.2 ± 0.4 100% PES -6.3 ± 0.2 -6.7 ± 0.6 EMPA 213 (65% PES / 35% CO) -6.6 ± 0.3 -7.4 ± 0.4

It was found that the addition of a combination of keratin hydrolyzate and cellulase in the detergent gave higher differences for most textiles than for textiles washed with the reference detergent without a combination of keratin hydrolyzate and cellulase. These higher differences stand for an improved lightening performance of the detergent according to the invention and thus for a minimization of graying of the textiles after washing with a detergent according to the invention which contains a combination of keratin hydrolyzate and cellulase.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2915875 A1 [0003]
• WO 2015/091108 A1 [0004]
• WO 2017/063960 A1 [0005]

Cited non-patent literature

• DIN EN ISO 13937-1: 2000 [0055]
• DIN EN ISO 13937-1: 2000 [0064]

Claims (12)

Detergent for textiles containing at least one keratin and / or keratin derivative in combination with cellulase. Detergent after Claim 1 in which a mass fraction of keratin and / or keratin derivative, based on the total mass of the detergent, is 0.001% to 5%, in particular 0.01% to 1%. Detergent according to any one of the preceding claims, wherein the keratin derivative is a partial hydrolyzate obtained from wool. Detergent according to one of the preceding claims, wherein a mass fraction of cellulase, based on the total mass of the detergent, from 0.001% to 1%, in particular 0.005% to 0.3%. Detergent according to one of the preceding claims, further comprising at least one surfactant. Detergent after Claim 5 , wherein a mass fraction of surfactant, based on the total mass of the detergent, 1% to 50%, in particular 3% to 20%, is. Detergent according to one of the preceding claims, wherein the detergent powder, liquid, gel, in the form of tabs or capsules. Use of a detergent according to any one of the preceding claims for improving the softness of fabrics after washing. Use of a detergent according to one of Claims 1 to 7 for improving the drapability of textiles after washing. Use of a detergent according to one of Claims 1 to 7 to improve the tear resistance of textiles after washing. Use of a detergent according to one of Claims 1 to 7 for improving the grayness inhibition and / or gray removal of textiles after washing. A washing process comprising the process steps: a) providing a detergent according to one of Claims 1 to 7 and b) contacting a textile with the detergent.